Expansion-joint section



June 5, 1925;

Filed Oct. 19, 1925 Figure 4 is a Patented June 5, 1928.

UNlTE-D STA TES PATENT OFFlCE.

ALBERT C. FISCHER, OF CHICAGO, IIlLINOIS.

EXPANSION-JOINT SECTION.

Application filed October 19, 1925. Serial No. 63,363.

to which it is to be applied, and with theends connected so as totightly close the same against the'possibility of concrete or otherforeign material collecting between theabutting ends of the sections anddestroying the eflectiveness of the joint. 7

Two forms ofthe invention are shown in the accompanying drawing by wayof illustration, in which Figure 1 is a perspective view of one form ofthe invention; Figure 2 a detailed planview of the form shown in Figure1; Figure 3' is a view in sideelvation of another form ofth' inventionand similar view showing the sections constructed as in Figure 3connected.

Referring now to the drawing in detail A and B represent'two sectionalstrips of expansion joint, which may be made of a proper thickness andin a suitable length, with the same sections adapted to be connectedtogether so as to offer a continuous strip when installed as a joint. ij

In all forms of the invention I prefer to equip the sections of thisstrip with overlapping projections so as to realize an effectiveconnecting means for the sections. In one form these interlockingprojections are to be realized by providing a rabbeted edge -5- on theends of each section, so as to leave projections -6-. The recess made bythe rabbeted edge-5 andthe projection -6- will produce a complementaryoverlap of the section ends, so that the inter locking projection -6- onone section will fit the recess made by the rabetted edge --5- on anabutting section. \Vith this interl0cking arrangement, as best shown inFigure 1, a snug fit may be made between the abutting ends of thesections, and the interlocking projection -6" will securely hold thesections together, particularly when the concrete is oured aroundthesame.

In Figure 3 have shown another form of interlocking projections in theform. of a m0rticed joint. In this form the projections with thesections of the.

7- on the ends of one section will fit the" recesses 8- on an adjacentsection, and

the adjacent section is made with an inter-:-

mediate inter-locking projection -9-'- which is adaptcd to-fit therecesses -10- between the projection 7. the sections are joinedtogether, as shown in Figure 4, a pin or the like ,,-1l may bedrivendo'wn' thru the joint so'as to lock the projections 7-- in therecesses -8 and the projection -9-in the recess '-10--.

In all forms theinterlocking and overlapping projections ofler amoreconvenient and efi'ective means of connecting the sections together-forthe reasons-above indicated. v

It might be stated here that the material from which the joint isconstructed will 'or-" dinarily comprise av mixture of blown bi tuminousmaterial or the'like, and a filling material such as, fibrous matter.This is simply mentioned so that it will be readily appreciated how thecuts can be made to produce these interlocking projections;

I clalm:

nous material, wherein the opposite edges are. provided with alternatecut-outs and In this form when 1. Alpreformed expansion joint of bitumiI joints are interconnected," said cut-outsand projections extendingthroughout the height of the strip; and a fastening pin adapted to passthru a plane parallel with the height of the strip and thru theinterlocking portions to hold adjacent ends of the'strip'together.

' 2. A- preformed expansion joint composed of bituminous material,the'opposed ends of the joint having relatively deep cut-outs andprojections adapted to receive similar cut' outs and projections of aconnectible strip, 1

and a fastening pin passing transversely thru theinterlocking"projections of two such interconnected strips whereby tohold them in assembled relation.

3. A relatively thin, preformed expansion joint of substantial height orwidth,- adapted to be installedso that the plane of its width is insubstantially vertical position,

. said joint being formed of non-metallic compressible and expansiblematerial, and said joint having its opposite ends provided with cut-outsand tongues extending longitudinally of the height of the strip, thecut-outs on one end being positioned opposite the tongues of theopposite end and being constructed and arranged so that the end of onestrip will overlappingly interlock with the opposite end of anotherstrip; and a relatively long pin adapted to pass through said tonguesand cut-outs, so as to hold the overlapped ends of adjacent strips inlocked relation 4 10 In testnnony W1L'1I80f I have signed my name tothis specification, on this 8th day of October, A. D. 1925. I

ALBERT C. FISCHER

